javax.annotation.Nonnull Maven / Gradle / Ivy
package javax.annotation;
import java.lang.annotation.Documented;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import javax.annotation.meta.TypeQualifier;
import javax.annotation.meta.TypeQualifierValidator;
import javax.annotation.meta.When;
/**
* The annotated element must not be null.
*
* Annotated fields must not be null after construction has completed.
*
* When this annotation is applied to a method it applies to the method return value.
*/
@Documented
@TypeQualifier
@Retention(RetentionPolicy.RUNTIME)
public @interface Nonnull {
When when() default When.ALWAYS;
class Checker implements TypeQualifierValidator {
public When forConstantValue(Nonnull qualifierArgument, Object value) {
if (value == null)
return When.NEVER;
return When.ALWAYS;
}
}
}